Winding apparatus for the manufacture of insulating tubes consisting of paper and resin



Jan. 12,1926. 1,569,656

W. KEHSE WINDING APPARATUS FOR THE MANUFACTURE OF INSULATING TUBES GONSISTING OF PAPER AND RESIN I Filed Sept. 5, 1924 Patented J an. 12, 1926.

UNITED STATES PATENT OFFICE.

w'ALTEIB KEHSE, OF DRESDEN-KEHNITZ, GEBKANY.

'WHDING- APPARATUS FOR THE MANUFACTURE OF INSULATING TUBES OONSISTING OI PAPER AND RESIN.

Application filed September 5'. 1924. Serial no. 730,025.

To all whom it may concern:

Be it known that I, \VAL'rnR KnHsE, chief engineer, a subject of the Free State of Prussia, German Republic, and resident of 'Dresden-Kemnitz, German Republic, have invented a new and useful Winding Apparatus for the Manufacture of Insulating Tubes Consisting of Paper and Resin, of which the following is a specification.

The manufacture of insulating tubes consisting of paper and resin offers difficulties in certain directions, partly found in the kind of paper used and partly in the working itself. For said working it is necessary to bring the paper-layers into such an intimate contact with each other that, after the hardening procedure, intervals are avoided between the layers. For obtaining said purpose, the paper-strip or band must be under high tension and the winding-core or drum is pressed against the heating cylinders by brake-tension. According to a modification the winding-core or drum is pressed against said heating cylinders by weighted rollers or spring-tension. However, if said means are to be of high eflect,

the pressures must be highly intense and require inconvenient dimensions of the wei ht-.

2d rollers, ornecessitate complicated windlasses in case it is intended to obtain the pressure by screws and springs. It is of utmost importance that the pressure acts in full intensity immediately on attaching the paper, as else theinterior layers are wound without any sufiicient" pressing effect. In view of the fact that the paper never runs smoothly knots and folds must be pressed down in any case, a fact which can not be-obtained with the means used up to. now.

The present invention has for its object to overcome said drawbacks. For this pur-.

pose hydraulic presses alone or in combination with accumulators are used. By said hydraulic presses and accumulators pressures suitable to attach the paper can be for tubes of larger dimensions and with the use of a pressure of 20,000 kilograms essentially denseror tighter tubes are obtained than those manufactured according to the procedures in use up to now. A proof of this fact is that the specific weight is higher and the structure of the paper is much more dense. Indeed the advantage mentioned isfound in the fact that the paper is perfectly impregnated with the heated resin when using thehi h pressure, whereas with the processes use up to the present it was necessary to make use of sized paper. In case of winding off the tubes produced in the known manner the layers of paper and resin could still be discovered.

In the drawing:

Fig. 1 is a sectional elevation illustrating an apparatus embodying my present invent1on.

Fig. 2 is a similar view showing another form of the invention, and

Fig. 3 is also a sectional elevation showing a third'form of the invention.

a is the winding-core or cylinder driven in an suitable manner and resting on two cylin ers b, the interior chambers of which are heated by gas or electricity. The shafts or trunnions of said heatin cylinders are arranged in ball bearings not shown) so as to be easily rotated and can be adjusted or displaced -len hwise. 1

c are two pillow-blocks carrying the heating cylinders b and arranged to be adjusted by screw-bolts d according to the different diameters of the insulating tubes to be manufactured on the winding cores a. e is the insulating-tube formed by a aperband surrounding at first only a sma part of the periphery of the windin -core a and supplied bg a cylinder not s own in the drawing. aid insulating-tube is produced by con:v onding turns or layers ofby a bolt Z with a bar jm, formingpart of' a h drallic press. n is the pistonmovable wit 'n the cylinder 0 of the press.

Said hydraulic press and e connecting bars moved by its piston are duplicated so that the winding-core a is uniformly pressed down against the heating cylinders b.

By corresponding dimensions of the pistons n the pressures exerted against the winding-core may be varied within wide limits, so that the paper-tubes can be manufactured with more or less density.

In the arrangement shown in Fig. 2 corresponding in its upper part to the arrangement shown in Fig. 1, the connectingbar 71, is directly connected to the piston n of thehydraulic cylinder 0. The interior of the latter is divided by the piston 11. into two compartments. A rod p arranged below the piston n is suitably guided and is moved to and fro within a prolonged part of the lower cylinder-casing. The upper interior part of said casing isconnected by a tube 9 with a valve-casing 8, whereas the interior of the lower prolonged part of said hydraulic press is connected by a tube 1" to a 1piper connected with an accumulator not s own in the drawing. By a respective position of the valve arranged within the.

casing s the piston n is moved in a down ward and upward direction, whereby the winding-core a is correspondingly pressed against the heating-cylinders b or released from them. The action of the'modified arrangement shownin Fig. 2 is the same as that shown in Fig. 1.

In another modification shown in Fig. 3 the piston n is arranged above the windingcore a resting on the heating-cylinders b, b

' and the pistonm is connected by rods h with a pressure-cylinder a running in ball-bearings. In this arrangement the windingcore rotates between the heating-cylinders b, b and the pressure cylinder at.

What I claim is:

1. In an apparatus for winding paper tubes comprising spaced heated cylinders, a winding core, and hydraulically operated devices for moving the winding core toward the heated cylinders and pressing the paper as wound on the coreagainst the said heated cylinders and between the same and the winding core. 1-9 ".3;

'2. An apparatus for windingpaper tubes comprising spaced heated cylinders, a winding core, and hydraulically operated devices for moving the said winding core toward and away from the said heated cylinders, whereby when moved toward the heated cylinders the winding core is pressed aga nst the samewith the paper web interven1ng.-. a

3. An apparatus for winding paper tubes comprising spaced heated cylinders, awindmg core, means for shifting the heated cylinders relatively to the winding core, and hydraulically operated devices for moving the winding core toward the heated cylinders and pressing the paper'as wound on the core against the said heated cylinders and between the same and the winding core.

4. An apparatus for winding paper tubes comprising heated cylinders, a winding core, means for shifting the heated cylinders toward and away fromeach other to adjust their positions relative to each other 1 and to the winding core, and hydraulically -core toward and away from the said heated cylinders, whereby when moved toward the cylinders the winding core is pressed against the intervening paper as the sameis wound on the core, and when moved away from the heated cylinders, the space betweenathe same and'the core is suflicient to remove the tube from the core and to prepare'the core for winding the next tube. In testimony, that I'claim the foregoing as my invention, I have signed my name this twenty-first day of August, 1924.

K EHSE. 

